28805976 has 64 divisors (see below), whose sum is σ = 84240000. Its totient is φ = 9095328.

The previous prime is 28805951. The next prime is 28805981. The reversal of 28805976 is 67950882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 595 + ... + 7613.

It is an arithmetic number, because the mean of its divisors is an integer number (1316250).

Almost surely, 2^28805976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28805976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42120000).

28805976 is an abundant number, since it is smaller than the sum of its proper divisors (55434024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28805976 is a wasteful number, since it uses less digits than its factorization.

28805976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7053 (or 7043 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 28805976 is about 5367.1198980459. The cubic root of 28805976 is about 306.5449727188.

The spelling of 28805976 in words is "twenty-eight million, eight hundred five thousand, nine hundred seventy-six".